Construction structure and construction method for improving three-tightness of window of outer wall of building

Abstract

The invention relates to the technical field of building construction, in particular to a construction structure for improving three-tightness of a window of an outer wall of a building, which comprises an ALC (autoclaved lightweight concrete) heat insulation protective strip pre-buried in window hole concrete, and a waterproof breathable film is arranged between the ALC heat insulation protective strip and heat insulation mortar. One side of the waterproof breathable film extends out of the heat preservation mortar and is located between the window frame and the polyurethane foam, a waterproof vapor-proof film is arranged on the inner side of the window frame in a circumferential mode, one side of the waterproof vapor-proof film is located between the window frame and the polyurethane foam, and the other side of the waterproof vapor-proof film is fixed to a wall. The door and window connecting line is connected with the external wall insulation. The heat preservation window has the technical effects of being good in heat preservation effect, good in waterproofness and capable of reducing window breathability.

Description

Technical Field

[0001] The invention relates to the technical field of building construction, in particular to a construction structure and a construction method for improving the three-tightness of windows on the exterior walls of buildings. Background Art

[0002] Traditional exterior windows are installed in the middle area of ​​the wall at the window opening. The window frame and the wall are fixed by connecting parts. The area formed between the window frame and the wall is filled with foaming agent and then plastered. The problems caused by this are poor sealing performance and strong air permeability, which easily form air channels and leakage channels; the other is that a thermal bridge channel will be formed between the window frame and the wall, affecting the thermal insulation performance of the window. In addition, the window is installed in the middle of the wall, and outdoor rainwater is easy to form a leakage channel between the walls. The accumulated rainwater penetrates into the room through the wall, which becomes a common quality problem that affects the use function of the building. The thermal insulation and energy-saving measures between the window and the wall are also due to many reasons such as node structural defects or construction quality. There are cracks and gaps in the insulation around the window over time, which affects its energy-saving effect. Summary of the invention

[0003] The embodiment of the present invention provides a construction structure and a construction method for improving the three-tightness of windows on the exterior wall of a building, which has the technical effects of good thermal insulation effect, good waterproofness and reduced air permeability of windows.

[0004] On the one hand, the present invention discloses a construction structure for improving the three-tightness of windows on the exterior wall of a building, which adopts the following technical solutions: A construction structure for improving the three-tightness of windows on the exterior wall of a building, comprising an ALC heat insulation protection strip embedded in the concrete of the window hole, a waterproof breathable membrane is arranged between the ALC heat insulation protection strip and the thermal insulation mortar, one side of the waterproof breathable membrane extends out of the thermal insulation mortar and is located between the window frame and the polyurethane foam, a circumferential waterproof vapor barrier membrane is arranged on the inner side of the window frame, one side of the waterproof vapor barrier membrane is located between the window frame and the polyurethane foam, the other side of the waterproof vapor barrier membrane is fixed to the wall, a door and window connecting line is pasted on the window frame outside the window, and the door and window connecting line is connected to the exterior wall insulation.

[0005] On the other hand, the present invention discloses a construction method for improving the three-tightness of a window on an exterior wall of a building, comprising the following steps: S1. ALC heat insulation strips are embedded in the window hole when pouring concrete. After pouring, the window surface is smoothed and pressed; S2. Install the window frame. After the window frame is installed, use polyurethane foam to seal the periphery of the window frame. Use glue to stick waterproof breathable membrane and waterproof vapor barrier membrane on the inside and outside of the window frame respectively. S3. During the exterior wall insulation construction, door and window connection lines are pasted on the outside of the window frame, and the door and window connection lines are connected to the exterior wall insulation.

[0006] Compared with the prior art, the present invention has the following technical effects: The invention is simple to construct and the materials are integrally formed, which saves time and improves work efficiency, saves costs, improves the thermal insulation and energy saving of windows, avoids the formation of thermal bridge channels, improves the waterproof performance of windows, reduces the air permeability of windows, keeps the room warm in winter, and blocks the high temperature from entering the room in summer. After the completion of this door and window construction system, it has good air tightness, water tightness, and sound insulation, ensuring that the room will not be contaminated by mold due to excessive humidity, and dust will not enter the room, which can greatly reduce the impact of the external environment on the room. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] The drawings described herein are used to provide a further understanding of the present invention, constitute a part of the present invention, and do not constitute a limitation of the present invention. In the drawings: Figure 1 A schematic diagram of a window frame installation node embodying the present invention; Figure 2 It is a structural schematic diagram showing the installation of the waterproof breathable membrane and the waterproof vapor barrier membrane in the present invention.

[0008] Explanation of the accompanying reference numerals: 1. Concrete; 2. Window frame; 3. ALC thermal insulation protection strip; 4. Polyurethane foam; 5. Thermal insulation mortar; 6. Waterproof breathable membrane; 7. Waterproof vapor barrier membrane; 8. Door and window connecting lines. DETAILED DESCRIPTION

[0009] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the embodiments and the accompanying drawings. Here, the illustrative embodiments of the present invention and their descriptions are used to explain the present invention, but are not intended to limit the present invention.

[0010] A construction structure for improving the three-tightness of windows on the exterior wall of a building, comprising an ALC heat insulation protection strip 3 pre-buried in the concrete 1 of the window hole, a heat insulation mortar 5 is arranged on the outside of the ALC heat insulation protection strip 3, a waterproof breathable membrane 6 is arranged between the ALC heat insulation protection strip 3 and the heat insulation mortar 5, one side of the waterproof breathable membrane 6 extends out of the heat insulation mortar 5 and is located between the window frame 2 and the polyurethane foam 4, a waterproof vapor barrier membrane 7 arranged in a circumferential manner is arranged on the inside of the window frame 2, one side of the waterproof vapor barrier membrane 7 is located between the window frame 2 and the polyurethane foam 4, and the other side of the waterproof vapor barrier membrane 7 is fixed to the wall. A door and window connecting line 8 is pasted on the window frame 2 outside the window, and the door and window connecting line 8 is connected to the exterior wall insulation.

[0011] An efficient processing method for improving the three-tightness of building exterior wall windows comprises the following steps: S1. Before construction, make good preparations for construction, and pay attention to the flatness, mortar fullness, reserved openings, plastering requirements, and opening (pipeline through the airtight layer, airtight layer through bolt holes) sealing of the main part. The performance indicators of key materials and components such as external door and window construction organization design and external insulation construction organization design must meet the design requirements - type inspection and re-inspection.

[0012] S2. When pouring concrete 1 in the window hole, ALC heat insulation protection strips 3 are embedded in advance. After pouring, the surface of the window is smoothed and polished, and the straightness and size of the hole meet the requirements accurately.

[0013] S3, installing the window frame 2. After the window frame 2 is installed, professional polyurethane foam 4 is used to seal the four sides of the window frame 2. The inner and outer sides of the window frame 2 are respectively adhered with a waterproof breathable membrane 6 and a waterproof vapor barrier membrane 7 using professional glue.

[0014] S4. During the external wall insulation construction, the door and window connection lines 8 are pasted on the outside of the window frame 2, and the door and window connection lines 8 are connected to the external wall insulation.

[0015] The invention is simple to construct and the materials are integrally formed, which saves time and improves work efficiency, saves costs, improves the thermal insulation and energy saving of windows, avoids the formation of thermal bridge channels, improves the waterproof performance of windows, reduces the air permeability of windows, keeps the room warm in winter, and blocks the high temperature from entering the room in summer. After the completion of this door and window construction system, it has good air tightness, water tightness, and sound insulation, ensuring that the room will not be contaminated by mold due to excessive humidity, and dust will not enter the room, which can greatly reduce the impact of the external environment on the room.

[0016] The above description is only a preferred embodiment of the present invention and is not intended to limit the protection scope of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention are included in the protection scope of the present invention.

Claims

1. A construction structure for improving the three-tightness of windows on the exterior wall of a building, characterized in that: The invention comprises an ALC heat insulation protection strip (3) embedded in the concrete of the window hole (1); a waterproof breathable membrane (6) is arranged between the ALC heat insulation protection strip (3) and the thermal insulation mortar (5); one side of the waterproof breathable membrane (6) extends out of the thermal insulation mortar (5) and is located between the window frame (2) and the polyurethane foam (4); a waterproof vapor barrier membrane (7) is arranged around the inner side of the window frame (2); one side of the waterproof vapor barrier membrane (7) is located between the window frame (2) and the polyurethane foam (4); the other side of the waterproof vapor barrier membrane (7) is fixed to the wall; a door and window connection line (8) is pasted on the window frame (2) outside the window; and the door and window connection line (8) is connected to the external wall thermal insulation.

2. A construction method for improving the three-tightness of a building exterior wall window using the construction structure of claim 1, comprising the following steps: S1. When pouring concrete (1) in the window hole, the ALC heat insulation protection strip (3) is embedded in advance. After pouring, the surface of the window is smoothed and calendered; S2, installing the window frame (2). After the window frame (2) is installed, polyurethane foam (4) is used to seal the periphery of the window frame (2). The inner and outer sides of the window frame (2) are respectively glued with a waterproof breathable membrane (6) and a waterproof vapor barrier membrane (7); S3. During the external wall insulation construction, a door and window connection line (8) is pasted on the outside of the window frame (2), and the door and window connection line (8) is connected to the external wall insulation.

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